Machine for treating rubber and other heavy plastic material



Mar. 27, 1923, 1,449,930

F. H.'BANB URY MACHINE FOR TREATING iwB'BER AND OTHER HEAVY PLASTIC MATERIA L 'Fiied Jan. 51, 1921 2 sheets-sheet 1 Mar. 27, 1923,

F. H. BANBURY MACHINE'FOR TREATING RUBBER AND OTHER HEAVY P STIC MATERIAL Tiled Jan. 51, 1921 a sheets-sheet 2 Patented Mar. 27, 1923.

UNITED STATES FERNLEY H. BANBURY, OF ANSONIA, CONNECTICUT, ASSIGNOR TO BIRMINGHAM IRON PATENT OFFICE.

FOUNDRY, OF DERBY, CONNECTICUT, A CORPORATION.

MACHINE FOR TREATING RUBBER AND OTHER HEAVY PLASTIC MATERIAL.

Application filed January 31,1921. Serial No. 441,209.

1 '0 all whom. it may concern:

Be it known that l. FnnxLnY H. BAN- BURY, a subject of the King of Great Britain. residing at Ansonia, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in Machines for Treating Rubber and Other Heavy Plastic Material: and I do hereby declare the following. when taken in connection with the accompanying drawings. and the characters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this application, and represent in Fig. 1 a face view of the machine for treating rubber and other heavy plastic material, constructed in accordance with my Fig. 1 a diagrammatical view showingmodified form of apron.

Fig. 5 a sectional view of a sheeting roll provided with a cutting-blade.

This invention relates to an improvement in machines for treating rubber and other heavy plastic material, and particularly to machines comprising a casing and one or more rotors arranged therein. In the more general constructions of machines of this type the mixed material is discharged in lumps, and if these lumps are allowed to stand the heat generated in thecenter of the lump would vulcanize the rubber and destroy it for further use. Efforts have been made to reduce the size of the lumps as discharged from the mixer, and the object of this invention is to provide means to discharge material in sheet form instead of in lump form. so that the material will cool quickly and effectively. and the invention consists in providing delivery mechanism whereby the material is not only mixed but delivered in sheet form. The invention turther'consists in certain construction and arrangement oi parts as hereinafter described and particularly recited in the claims.

In illustrating my invention, I havewhich are mounted two sheeting-rolls 16 and 1?, arranged to be driven by anysuitable means. Arranged adjacent to the roll 17 is a stripper lb. and arranged adjacent to the-roll 16 is a stripper 1%). Beneath the rolls is an endless apron 20. driven by suitable means. This apron. instead of extending in a straight line. as shown in Fig. 2 of the drawings. may pass over elevated rollsQl and 22. more or less in number, between which the apron will sag. and so that the stock carried on the apron 'will have more time to cool before it is finally lischarged. As shown in Fig. 2 of the drawings. the apron is driven by the pulley 23 with a belt 2-1 and, obviously, various means for driving the belt may be employed. Instead of employing the stripper 19, I may provide the roll 16 with a cutting-blade 25. After the rubber has been properly mixed in casing 6, the door 8 will be open to allow it to drop out and tall by gravity to a point between the sheeting-rolls 16 and 17, being guided thereto by guide-plates 26 and 27. As the sheeting-rolls turn the rubber is drawn down between them. and it it tends to stick to the roll 17. will be removed therefrom by the stripper 1S and passed on to the apron 20, by which it is carried to any convenient point. On the other hand, it the mass tends to stick to the roll 16, it will be detached therefrom by the stripper l9 and dropped onto the apron 20. Instead of employin two sheeting-rolls. I may employ asingle roll 28, like the roll 16. but instead of having the roll 17. I have the fixed-abutment 29. whichalso forms a guide and between which and the roll 28 the stock may pass and be delivered in sheet form in substantially the same way as though two rolls were employed.

It will thus be seen that the mixed material may be delivered from the mixer by the operator in charge and without further of the material is effected without intermediate handling.

2. In a machine of the class described, the combination with a mixer having a downwardly-opening discharge-passage and a closure therefor, of sheeting means comprising a sheeting-roll positioned with respect to the said discharge-opening of the mixer to permit the mixed material to be fed by gravity from the mixer direct to .the sheeting means withoutintermediate handling.

3. In a machine of the class described, the combination with a mixer having a downwardly-opening discharge-passage and a closure therefor of sheeting means including a pair of sheeting-rolls positioned with respect ceive mixed material direct from the mixer when the closure thereof is opened, whereby the intermediate handling ofthe mixed ma terial is eliminated.

- 4. In a machine of the class described, the combination with a mixer having a down wardly-opening discharge-passage and closure therefor of a base upon which the said mixer is mounted and sheeting means to the said discharge-opening to re-' located in the said base at a point below the said discharge-opening, so that, when the closure is open, the mixed material will descend by gravity direct from the mixer to the sheeting means, whereby intermediate handling of the mixed material is avoided.

5. In a machine of the character described, the combination with a mixer having a downwardly-opening discharge-passage and a closure therefor, of a base upon which the said mixer is mounted, cated in the said base at a point below the said opening for the gravity feed of the mixed material directly to the sheeting means, whereby the intermediate handling of such material is avoided, and a conveyor passing through the said base and positioned sheeting means 10- Y to remove the material when sheeted by the said sheeting means.

6. In a rubber working machine, a chamber adapted to open substantially throughout-its length and means, substantially c0- extensive. with the length of the chamber to discharge material therefrom in sheet form.

7. A rubber compounding machine, including a mixing chamber, sheeting rolls substantially coextensive in length with said chamber, positioned adjacent thereto, and means to open said chamber substantially throughout its length to deliver the compounded material to said rolls.

In testimony whereof, I have signed this specification in the presence of two subscribing witnesses.

F. H. BANBURY.

Witnesses:

Fn ionmo C. EARLE, MALCOLM P. NIoHoLs. 

